JPS6034242B2 - Continuous terminal manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing continuous terminals used in electrical components such as variable resistors and switches.

Specifically, the present invention relates to a method for manufacturing a continuous terminal that can be easily attached to a small terminal, such as an insulating substrate having a flea portion of about 8 to 12 ribs in diameter.

In the conventional method of manufacturing terminals for electrical components, each terminal is manufactured one by one.
This method has relied on either attaching it to an insulating substrate or extracting continuous terminals from the hoop material using a press and processing them.

Therefore, when manufacturing small continuous terminals that are suitable for insulating substrates with diameters from 8 to 12 diameter, the above method requires a considerable pitch between terminals due to the caulking part for attaching to the substrate. Since it is difficult to narrow the scope, a solution was required. FIG. 1 is a diagram illustrating a method for manufacturing a secondary terminal. 1 is a metal strip, 2 is a feed hole, 3 is a terminal plate, L is a pitch between terminals, and A is a caulking part.

The disadvantage of the conventional example is that when manufacturing small continuous terminals,
Due to the provision of the caulked portion A, the pitch L between the terminals could not be made very narrow.

The present invention aims to solve the above-mentioned problems by providing a method for manufacturing continuous terminals in which the pitch between the terminals is extremely narrow.

Hereinafter, a method for manufacturing a small continuous terminal according to the present invention will be specifically described.

Figure 2a is a hoof.

It is a 1st process drawing which shows the Example of this invention which punched out the village using the press machine. In the first step, a metal strip 1 having feed holes 2 having a predetermined interval, a connecting plate 5 connected to the metal strip 1 in a T-shape, and a plurality of terminal plates 3 connected to the free end of the connecting plate. and a band-shaped metal strip 4 connected to the plurality of terminal plates and having a caulked portion parallel to the metal strip 1, and further provided with a cut line 4a in the caulked portion.
Put in. FIG. 2b is a second process diagram showing an embodiment of the present invention.

In the second step, the strip-shaped metal strip 4 arranged parallel to the metal strip 1 is cut out along the cut line 4a of the caulked part made at the end of the first step, and the T-shaped terminal plate having the head 7 is cut out. form.

FIG. 2c is a third process diagram showing an embodiment of the present invention.

・In the third step,
An extremely small small protrusion 7a is provided at the center of the head 7 of the T-shaped terminal board formed in the second process drawing, and a small protrusion 7a is further provided.
A bending line 6 is provided symmetrically from the left and right sides.

FIG. 2d is a fourth process diagram showing an embodiment of the present invention.

In the fourth step, a part of the top 7 of the T-shaped terminal plate in the third step is bent at right angles along the bending line 6 to provide opposing ears 6a and 6b.

The rear figure is a fifth process diagram showing an embodiment of the present invention. Fifth
In the process, the left and right free ends 5a of the connecting plate 5, which connect the terminal plates 3, are bent along the bending line 5b toward the same main surface side of the connecting plate, ie, in the opposite direction.
Fold.

As a result, the distance between the left and right terminal boards 5 becomes narrower than before folding, and therefore, a pair of terminals is formed in which the opposing tabs formed on the left and right terminal boards 5 are also close to each other. At this time, when the front and back sides of the terminal plate 5 are reversed, the direction in which the opposing tabs protrude also changes. FIG. 2f is a sixth process diagram showing an embodiment of the present invention.

In the sixth step, several pieces of the substrate consisting of the resistor 10 and the lead portion 11 are compressed onto the set of terminals formed in the fifth step, and separated along the score line 9.

FIG. 3a is a front view of a terminal provided with an insulating substrate separated from the T-shaped connecting plate 5, and FIG. 3b is a rear view of FIG. 3a.

As described above, in the process of manufacturing a continuous terminal of the present invention, the left and right free portions of a connecting plate provided with a pair of terminal plates having opposing ears are connected to the connecting plate. It can be folded 1800 degrees on the same king side and narrow the distance between a pair of terminal plates with opposing ears.It can be manufactured from hoop material by continuous processing using an automatic machine, making it mass-producible and inexpensive. It has remarkable effects such as being able to provide products.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a continuous terminal of a slave, Figs. 2a to 2f are process diagrams of the method for manufacturing a continuous state of the present invention, and Fig. 3a is a state in which the terminal according to the present invention is attached to an electrical component. FIG. 3b is a rear view of the same. 1...metal strip, 2...spring hole, 3.
...Terminal board, 4... Band-shaped metal strip, 5.
...Connecting plate, 6...Bending line, 7...
... Head, 9 ... Cut line, 10 ...
-Resistor, 11...Lead part. Fig. 1 Fig. 3a Fig. 3b Fig. 2a Fig. 2b Fig. 2c Fig. 2d Fig. 2e Fig. 2f

Claims (1)

[Claims] 1. A metal strip, and a plurality of connecting plates arranged at predetermined intervals close to the metal strip and connected to the metal strip, one pair each from a free end on the plurality of connecting plates. Terminal boards are erected at predetermined intervals, each terminal board has a head, and the head is provided with a caulking part between it and the head of another adjacent terminal board. a first step, a second step of separating the terminal board having the head at the caulking portion, a third step of inserting a bending line into the head of the cut terminal board, and a third step of cutting the terminal board having the head at the caulking portion; a fourth step of bending the terminal plate at right angles along the bending line on the head of the plate to form opposing lugs; and a pair of terminals having the opposing lugs of the connecting plate. Attach the left and right free ends of each plate to the same main surface side of the connecting plate in the direction in which both terminal plates are reversed and approach each other.
A fifth step of folding the opposing tabs so that they are close to each other and arranging them side by side, and a fifth step of sandwiching an insulating substrate between the opposing tabs and separating the terminal board from the connecting plate after pressure bonding. A method for manufacturing a continuous terminal.